Right-click the downloaded setup file avast_free_antivirus_setup_online.exe and choose Run as administrator from the context menu.

If prompted by User Account Control dialog for permissions, click Yes (or Continue).

The Avast Setup wizard will appear.

Select Regular installation for quicker setup with default options.

Select Custom installation to specify the location to install program files, and choose specific program components and languages on the following screens.

Read privacy information and then click Continue.

The Avast Setup wizard then creates a system restore point and shows installation progress. It may take a few minutes to complete the installation.

Once the installation is completed, click Done to exit setup.

Avast Free Antivirus 2015 is now installed on your computer and ready to use. The Avast user interface is accessible via the orange ball icon in your system tray or orange shortcut icon on your Windows Desktop.

Be sure to register to get your free license within 30 days of installation.

Right-click the downloaded setup file avast_free_antivirus_setup_online.exe, choose Run as administrator from the context menu,
...and if prompted by the User Account Control dialog for permissions, click Yes (or Continue).

The Avast Setup wizard will appear. You can select your preferred language in the top right corner.
If you do not want to install the recommended product, opt out at this stage by unchecking the boxes in the bottom left corner.

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